Dean giggled rather childishly as he placed the shaving cream and molasses on his sleeping brother's hand.

"I don't understand your over-exuberant glee. Why is this funny?" buzz kill Cas asked, deadpan as always. Dean hushed him impatiently. He had taken it upon himself to teach Cas what it was to be human and the most important thing about humanity, he decided, was humor. Try explaining that to the most unhumourous being in existence.

He gave Cas the feather and gestured for Cas to carry out the rest of the prank. He had explained to the angel earlier about pranks and this one particular. Dean made up a plan to get his brother and explained it to the unenthusiastic Castiel.

"Why is that funny?"

"I don't know it just is," Dean explained hours earlier.

Now Cas looked rather perturbed as he grabbed the feather and walked over to the sleeping hunter. He tickled Sam's nose like Dean had told him to. At first the hunter merely scrunched his nose and moved his face away, but with silent urging from Dean, Cas kept tickling.

Instead of swatting his face with the stinky shaving cream and gooey molasses like they had planned, Sam swung his arm out sleepily, swatting Cas on the tummy. The shaving cream and molasses splattered on his nice suit with a loud smack. Cas looked so unpleased Dean couldn't help but burst out laughing. Sam jumped awake confused and stared at his laughing brother and the pissed angel.

"This is a stupid joke," Cas said looking very displeased. "This is a very nice suit, I like this suit." He nearly whined. Dean laughed harder.

"Oh don't be a poor sport!" Dean yelled as the angel disappeared.

"You think he guessed I was in on it?" Sam asked suddenly smirking.

"Nope! He had no idea!" the brothers laughed at the angel's expense and Cas watching silently from just across the veil, plotting his revenge.

Dean 1

Sam 1

Cas 0 (for now…)